What is the answer 6+100

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?